Sound Output Test

Test your speakers and headphones with left/right channel checks

🔊

LEFT

🔊

RIGHT

Test Frequency: 440 Hz

How to Test Your Speakers

Click the Left, Right, or Both channel buttons to play a test tone through your speakers or headphones. If you hear sound from the correct side, your audio output is working properly.

Use the frequency slider to test different tones. Lower frequencies test bass response while higher frequencies test treble. The 440 Hz tone (A4) is the standard tuning reference.

This tool uses the Web Audio API and works in all modern browsers without any plugins or downloads.